<template>
  <div></div>
</template>

<script>
export default {
   created(){
        function copy(target){
        // ...在这里补充代码
        return [...target]
        }   
       let arr = [1, 2, 3, 4, 5]
        let brr = copy(arr); 
        arr.push(100);
        console.log(brr); // [1, 2, 3, 4, 5]
   }
}
</script>

<style>

</style>